Photo

In this Jan. 20, 2013 photo, tourists scale Crater Hill toward Castle Rock on Ross Island, Antarctica. Tourism is rebounding here five years after the financial crisis stifled what had been a burgeoning industry. And it’s not just retirees watching penguins from the deck of a ship. Visitors are taking tours inland and even engaging in “adventure tourism” like skydiving and scuba diving under the ever-sunlit skies of a Southern Hemisphere summer. (AP Photo/Rod McGuirk)
/ AP